United Downs 1 borehole image interpretation

This dataset contains the borehole image interpretation of the United Downs 1 borehole, Cornwall (BGSID: 21246966)
The acoustic borehole images have been interpreted for faults, breakouts and conductive and resistive fractures.
For faults and fractures each line in the file defines a plane passing through the borehole. This includes:
• Depth at which the plane intersects the borehole wall, this is defined as the midpoint of the feature as each plane has a top and bottom intersection.
• Azimuth, this is the azimuth of the dip direction of the plane, it is at 90 degrees to the strike of the feature.
• Dip, this is the dip angle of the plane.
• Type, this is a classification of the feature.
For breakouts each line represents an individual feature which covers an area of the borehole wall. This includes:
• Depth the midpoint depth of the breakout.
• Azimuth, this is the orientation of the breakout.
• Type, this is a classification of the feature.
• Breakout Height, the length of the breakout in meters.
• Breakout Width, the width of the breakout in degrees.
• Type, this is a classification of the feature.
The work was undertaken by BGS as part of the GWatt Project award reference number NE/S004262/1. It was funded by the UKRI Natural Environment Research Council.

本数据集包含英国康沃尔郡United Downs 1号钻孔（英国地质调查局编号：BGSID: 21246966）的钻孔图像解译成果。
已针对断层、井壁坍塌以及传导性与阻性裂缝，对声波钻孔图像完成解译工作。
针对断层与裂缝，文件中的每一行均定义了一个穿过钻孔的平面，其包含以下信息：
• 交点深度：平面与井壁的交点深度，该深度取特征的中点，因每个平面均存在上下两个交点。
• 方位角：即平面倾斜方向的方位角，与该特征的走向呈90度夹角。
• 倾角：即平面的倾斜角度。
• 类型：该特征的分类标签。
针对井壁坍塌，文件中的每一行代表一个覆盖部分井壁的独立特征，其包含以下信息：
• 深度：井壁坍塌特征的中点深度。
• 方位角：井壁坍塌的朝向。
• 类型：该特征的分类标签。
• 坍塌高度：井壁坍塌的长度，单位为米。
• 坍塌宽度：井壁坍塌的宽度，单位为度。
• 类型：该特征的分类标签。
本工作由英国地质调查局（British Geological Survey, BGS）依托GWatt项目开展，项目资助编号为NE/S004262/1，资助方为英国研究与创新署（UKRI）下属的自然环境研究委员会。

搜集汇总

背景与挑战

背景概述

该数据集包含康沃尔United Downs 1钻孔的声波钻孔图像解释，记录了断层、断裂和破裂等地质特征的分类和描述。数据以CSV和RTF格式提供，覆盖2019年10月15日至2020年11月16日的时间范围，空间覆盖范围为康沃尔United Downs地区。